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Heavy haul railway tunnel group ballastless track and construction method thereof

A ballastless track and tunnel group technology, applied in the direction of track, movable track, laying track, etc., can solve the problem that the accurate detection and maintenance of loose fasteners cannot be realized, and achieve the effect of convenient maintenance process

Active Publication Date: 2021-08-10
北京中铁诚业工程建设监理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fastener system of ballastless track is generally installed densely, and it is difficult for railway maintenance personnel to observe which fastener is at risk of loosening with the naked eye. Therefore, it is impossible to achieve accurate detection and repair of loose fasteners, which needs to be improved

Method used

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  • Heavy haul railway tunnel group ballastless track and construction method thereof
  • Heavy haul railway tunnel group ballastless track and construction method thereof
  • Heavy haul railway tunnel group ballastless track and construction method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Embodiment 1: The embodiment of this application discloses a ballastless track of a group of heavy-duty railway tunnels.

[0047] refer to figure 1, the ballastless track of the heavy-duty railway tunnel group includes a concrete base 1 , a plurality of track slabs 2 and two rows of linear rails 3 . Several track slabs 2 are divided into two rows, and are equidistant side by side and arranged transversely on the concrete base 1, so as to realize the support of the steel rail 3.

[0048] refer to figure 1 , figure 2 A pair of shoulders 21 are provided on both ends of the track slab 2, and the rail 3 is laid on the track slab 2, and is located between each pair of shoulders 21, so as to limit the position of the rail 3. A pair of fasteners 22 are arranged between each pair of retaining shoulders 21 , and the pair of fasteners 22 are distributed on both sides of the rail 3 and press against the sidewalls of the lower ends of the rail 3 .

[0049] refer to figure 1 , ...

Embodiment 2

[0074] Embodiment 2: The embodiment of this application discloses a construction method for ballastless track of heavy-duty railway tunnel group.

[0075] The construction method of the ballastless track of the heavy-duty railway tunnel group comprises the following steps:

[0076] S1, install the steel bars of the bottom plate of the ballast bed, and pour the concrete at the bottom;

[0077] S2, install the base reinforcement, the concrete base 1, and maintain the concrete base 1;

[0078] S3, laying the prefabricated track slabs 2 equidistantly on the concrete base 1, and pouring concrete to fix the track slabs 2;

[0079] S4, laying the rail 3, and calibrating the rail 3;

[0080] S5, install the fastener 22, and tighten the bolt 23 into the embedded pipe 24 on the track plate 2, so as to realize the fixing of the fastener 22 and the rail 3;

[0081] S6, installing the airbags 5, and filling the colored detection liquid into each airbag 5;

[0082] S7, install the feedb...

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Abstract

The invention relates to a heavy haul railway tunnel group ballastless track and a construction method thereof, and relates to the technical field of ballastless tracks, the heavy haul railway tunnel group ballastless track comprises a concrete base, a plurality of track plates and two rows of steel rails, the track plates are provided with fasteners for pressing the two sides of the steel rails, and the fasteners are provided with bolts in threaded connection with the track plates; embedded pipes are arranged on the upper end faces of the two ends of the track plate, detection pipes are arranged on the end faces of the two ends in an inward extending mode, the ends, located in the track plate, of the detection pipes are bent upwards to be provided with extending pipes communicating with the lower ends of the embedded pipes, and the other ends of the detection pipes are bent downwards to be provided with transparent observation pipes. An elastic air bag is arranged at the lower end of the observation tube, the air bag is detachably connected to the observation tube, and detection liquid with colors is contained in the air bag. The displacement change generated by loosening of the bolt is transferred to the change of the detection liquid in the observation pipe, so that a maintainer can accurately judge whether the fastener is loosened, and accurate maintenance of the fastener is achieved.

Description

technical field [0001] The application relates to the field of ballastless tracks, in particular to a ballastless track for heavy-duty railway tunnel groups and a construction method thereof. Background technique [0002] Ballastless track refers to the track structure that uses concrete, asphalt mixture and other integral foundations to replace the loose-grained gravel track bed, also known as ballastless track. The ballastless track avoids splashing ballast, which has the advantages of good ride comfort, good stability, long service life, good durability and less maintenance work. [0003] Chinese patent CN202247541U discloses a slab-type ballastless track structure, which includes two parallel rails, and the bottom of the rails is sequentially provided with two cloth and one membrane sliding layer, concrete bed, mortar cushion and track slabs, track Shoulders are arranged on both sides of the board, and each steel rail is respectively installed in the corresponding shoul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B23/10E01B23/14E01B29/16E01B35/00
CPCE01B23/10E01B23/14E01B29/16E01B35/00
Inventor 陈如意杨志安史新生
Owner 北京中铁诚业工程建设监理有限公司